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8fc37f2c TG |
1 | #ifndef _ASM_X86_PTRACE_H |
2 | #define _ASM_X86_PTRACE_H | |
3 | ||
4 | #include <linux/compiler.h> /* For __user */ | |
5 | #include <asm/ptrace-abi.h> | |
6 | ||
7 | #ifndef __ASSEMBLY__ | |
8 | ||
9 | #ifdef __i386__ | |
10 | /* this struct defines the way the registers are stored on the | |
11 | stack during a system call. */ | |
12 | ||
65ea5b03 PA |
13 | #ifndef __KERNEL__ |
14 | ||
8fc37f2c TG |
15 | struct pt_regs { |
16 | long ebx; | |
17 | long ecx; | |
18 | long edx; | |
19 | long esi; | |
20 | long edi; | |
21 | long ebp; | |
22 | long eax; | |
23 | int xds; | |
24 | int xes; | |
25 | int xfs; | |
65ea5b03 | 26 | /* int gs; */ |
8fc37f2c TG |
27 | long orig_eax; |
28 | long eip; | |
29 | int xcs; | |
30 | long eflags; | |
31 | long esp; | |
32 | int xss; | |
33 | }; | |
34 | ||
65ea5b03 PA |
35 | #else /* __KERNEL__ */ |
36 | ||
37 | struct pt_regs { | |
38 | long bx; | |
39 | long cx; | |
40 | long dx; | |
41 | long si; | |
42 | long di; | |
43 | long bp; | |
44 | long ax; | |
45 | int ds; | |
46 | int es; | |
47 | int fs; | |
48 | /* int gs; */ | |
49 | long orig_ax; | |
50 | long ip; | |
51 | int cs; | |
52 | long flags; | |
53 | long sp; | |
54 | int ss; | |
55 | }; | |
8fc37f2c TG |
56 | |
57 | #include <asm/vm86.h> | |
58 | #include <asm/segment.h> | |
59 | ||
60 | struct task_struct; | |
61 | extern void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs, int error_code); | |
62 | ||
63 | /* | |
64 | * user_mode_vm(regs) determines whether a register set came from user mode. | |
65 | * This is true if V8086 mode was enabled OR if the register set was from | |
66 | * protected mode with RPL-3 CS value. This tricky test checks that with | |
67 | * one comparison. Many places in the kernel can bypass this full check | |
68 | * if they have already ruled out V8086 mode, so user_mode(regs) can be used. | |
69 | */ | |
70 | static inline int user_mode(struct pt_regs *regs) | |
71 | { | |
65ea5b03 | 72 | return (regs->cs & SEGMENT_RPL_MASK) == USER_RPL; |
8fc37f2c TG |
73 | } |
74 | static inline int user_mode_vm(struct pt_regs *regs) | |
75 | { | |
65ea5b03 PA |
76 | return ((regs->cs & SEGMENT_RPL_MASK) | |
77 | (regs->flags & VM_MASK)) >= USER_RPL; | |
8fc37f2c TG |
78 | } |
79 | static inline int v8086_mode(struct pt_regs *regs) | |
80 | { | |
65ea5b03 | 81 | return (regs->flags & VM_MASK); |
8fc37f2c TG |
82 | } |
83 | ||
65ea5b03 PA |
84 | #define instruction_pointer(regs) ((regs)->ip) |
85 | #define frame_pointer(regs) ((regs)->bp) | |
77f2878b | 86 | #define stack_pointer(regs) ((unsigned long)(regs)) |
65ea5b03 | 87 | #define regs_return_value(regs) ((regs)->ax) |
8fc37f2c TG |
88 | |
89 | extern unsigned long profile_pc(struct pt_regs *regs); | |
90 | #endif /* __KERNEL__ */ | |
91 | ||
92 | #else /* __i386__ */ | |
93 | ||
65ea5b03 PA |
94 | #ifndef __KERNEL__ |
95 | ||
8fc37f2c TG |
96 | struct pt_regs { |
97 | unsigned long r15; | |
98 | unsigned long r14; | |
99 | unsigned long r13; | |
100 | unsigned long r12; | |
101 | unsigned long rbp; | |
102 | unsigned long rbx; | |
103 | /* arguments: non interrupts/non tracing syscalls only save upto here*/ | |
104 | unsigned long r11; | |
105 | unsigned long r10; | |
106 | unsigned long r9; | |
107 | unsigned long r8; | |
108 | unsigned long rax; | |
109 | unsigned long rcx; | |
110 | unsigned long rdx; | |
111 | unsigned long rsi; | |
112 | unsigned long rdi; | |
113 | unsigned long orig_rax; | |
114 | /* end of arguments */ | |
115 | /* cpu exception frame or undefined */ | |
116 | unsigned long rip; | |
117 | unsigned long cs; | |
118 | unsigned long eflags; | |
119 | unsigned long rsp; | |
120 | unsigned long ss; | |
121 | /* top of stack page */ | |
122 | }; | |
123 | ||
65ea5b03 PA |
124 | #else /* __KERNEL__ */ |
125 | ||
126 | struct pt_regs { | |
127 | unsigned long r15; | |
128 | unsigned long r14; | |
129 | unsigned long r13; | |
130 | unsigned long r12; | |
131 | unsigned long bp; | |
132 | unsigned long bx; | |
133 | /* arguments: non interrupts/non tracing syscalls only save upto here*/ | |
134 | unsigned long r11; | |
135 | unsigned long r10; | |
136 | unsigned long r9; | |
137 | unsigned long r8; | |
138 | unsigned long ax; | |
139 | unsigned long cx; | |
140 | unsigned long dx; | |
141 | unsigned long si; | |
142 | unsigned long di; | |
143 | unsigned long orig_ax; | |
144 | /* end of arguments */ | |
145 | /* cpu exception frame or undefined */ | |
146 | unsigned long ip; | |
147 | unsigned long cs; | |
148 | unsigned long flags; | |
149 | unsigned long sp; | |
150 | unsigned long ss; | |
151 | /* top of stack page */ | |
152 | }; | |
8fc37f2c TG |
153 | |
154 | #define user_mode(regs) (!!((regs)->cs & 3)) | |
155 | #define user_mode_vm(regs) user_mode(regs) | |
65ea5b03 PA |
156 | #define v8086_mode(regs) 0 /* No V86 mode support in long mode */ |
157 | #define instruction_pointer(regs) ((regs)->ip) | |
158 | #define frame_pointer(regs) ((regs)->bp) | |
159 | #define stack_pointer(regs) ((regs)->sp) | |
160 | #define regs_return_value(regs) ((regs)->ax) | |
8fc37f2c TG |
161 | |
162 | extern unsigned long profile_pc(struct pt_regs *regs); | |
163 | void signal_fault(struct pt_regs *regs, void __user *frame, char *where); | |
164 | ||
165 | struct task_struct; | |
166 | ||
167 | extern unsigned long | |
168 | convert_rip_to_linear(struct task_struct *child, struct pt_regs *regs); | |
169 | ||
8fc37f2c TG |
170 | #endif /* __KERNEL__ */ |
171 | #endif /* !__i386__ */ | |
efd1ca52 RM |
172 | |
173 | #ifdef __KERNEL__ | |
174 | ||
7f232343 RM |
175 | /* |
176 | * These are defined as per linux/ptrace.h, which see. | |
177 | */ | |
178 | #define arch_has_single_step() (1) | |
179 | extern void user_enable_single_step(struct task_struct *); | |
180 | extern void user_disable_single_step(struct task_struct *); | |
181 | ||
10faa81e RM |
182 | extern void user_enable_block_step(struct task_struct *); |
183 | #ifdef CONFIG_X86_DEBUGCTLMSR | |
184 | #define arch_has_block_step() (1) | |
185 | #else | |
186 | #define arch_has_block_step() (boot_cpu_data.x86 >= 6) | |
187 | #endif | |
188 | ||
efd1ca52 RM |
189 | struct user_desc; |
190 | extern int do_get_thread_area(struct task_struct *p, int idx, | |
191 | struct user_desc __user *info); | |
192 | extern int do_set_thread_area(struct task_struct *p, int idx, | |
193 | struct user_desc __user *info, int can_allocate); | |
194 | ||
195 | #endif /* __KERNEL__ */ | |
196 | ||
8fc37f2c TG |
197 | #endif /* !__ASSEMBLY__ */ |
198 | ||
96a388de | 199 | #endif |